java.lang.Object
g1601_1700.s1671_minimum_number_of_removals_to_make_mountain_array.Solution

public class Solution extends Object
1671 - Minimum Number of Removals to Make Mountain Array\. Hard You may recall that an array `arr` is a **mountain array** if and only if: * `arr.length >= 3` * There exists some index `i` ( **0-indexed** ) with `0 < i < arr.length - 1` such that: * `arr[0] < arr[1] < ... < arr[i - 1] < arr[i]` * `arr[i] > arr[i + 1] > ... > arr[arr.length - 1]` Given an integer array `nums`, return _the **minimum** number of elements to remove to make_ `nums` _a **mountain array**._ **Example 1:** **Input:** nums = [1,3,1] **Output:** 0 **Explanation:** The array itself is a mountain array so we do not need to remove any elements. **Example 2:** **Input:** nums = [2,1,1,5,6,2,3,1] **Output:** 3 **Explanation:** One solution is to remove the elements at indices 0, 1, and 5, making the array nums = [1,5,6,3,1]. **Constraints:** * `3 <= nums.length <= 1000` * 1 <= nums[i] <= 109 * It is guaranteed that you can make a mountain array out of `nums`.
  • Constructor Details

    • Solution

      public Solution()
  • Method Details

    • minimumMountainRemovals

      public int minimumMountainRemovals(int[] nums)